Superconducting fluctuations and excess conductivity analysis of Re substituted (Tl1-xRex)Sr2CaCu2O7-δ

Annas Al-Sharabi, Roslan Abd. Shukor

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3 Citations (Scopus)

Abstract

Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

Original languageEnglish
Pages (from-to)140-150
Number of pages11
JournalInternational Journal of Electrochemical Science
Volume10
Issue number1
Publication statusPublished - 2015

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Anisotropy
Substitution reactions
Solid state reactions
Superconducting transition temperature
Chemical analysis

Keywords

  • Excess conductivity
  • Rhenium
  • Solid state reaction
  • Tl-1212

ASJC Scopus subject areas

  • Electrochemistry

Cite this

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title = "Superconducting fluctuations and excess conductivity analysis of Re substituted (Tl1-xRex)Sr2CaCu2O7-δ",
abstract = "Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.",
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T1 - Superconducting fluctuations and excess conductivity analysis of Re substituted (Tl1-xRex)Sr2CaCu2O7-δ

AU - Al-Sharabi, Annas

AU - Abd. Shukor, Roslan

PY - 2015

Y1 - 2015

N2 - Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

AB - Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

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